There is no way to delete items; you would need to make them over to someone else. There have been (and I believe currently still is) suggestion threads to that end, to allow people to "unclaim" items, but nothing implemented at this time.

You could also do what a lot of people do and post in the Traders Lounge to see if anyone knows who the owner is so that you can either contact them to arrange a pickup, or just make them over to them.

Or you could just make them over to an inactive player if you really don't want them.

to be able to recycle/destroy items. Don't remember why it never went through, may have just been one of those things that falls through the cracks. It'd be great though to be able to just destroy random items you don't want anymore via that droid or other ways.